Bass Metallophone: Suzuki diatonic Metallophones add a full, lasting resonation to your Instrument ensemble necessary for a complete concert sound. Each Metallophone bar is manufactured from the finest aluminum alloys, then skillfully overtone tuned for perfect pitch and harmonics. All Metallophones include Mallet storage, Chromatic bar storage, bottom positioned Pins, Note name labeling inside each resonator chamber, damper bar w/ Adjustable Handle, 1 Bb and 2 F# bars and 2 Pairs of appropriate Mallets. Built in Mallet storage: Every Xylophone and Metallophone has a convenient place to store your Mallets so you're sure they'll be there next time you play. Chromatic bar storage: We've included a special place to store the Bb and F# bars right on the side of Xylophones and Metallophones. It's a no cost option! Note name identification: No more difficulty putting the Keyboard back to a C major configuration. The Note names are labeled inside. Note name on top - Pins on the bottom: Others put Note names on the bottom where they can't be seen. We put them on top and place the Pins on the bottom, preventing them from bending if removed incorrectly. Metallophone dampers - Standard equipment: Metallophones ring on and on - you need a damper. Suzuki Metallophones have them as Standard equipment w/ Adjustable Handle and lock down. Bottom positioned bar holding pins that prevent bending from improper bar removal. Note name labeling inside each resonator chamber:1 Bb and 2 F# bars and 2 pair of appropriate mallets.